Saratov JOURNAL of Medical and Scientific Research

Chekhonatskaya M.L.

Saratov State Medical University, Research Institute for Fundamental and Clinical Urology Nephrology

Radiation methods for evaluating renal function in children

Year: 2018, volume 14 Issue: №3 Pages: 385-388
Heading: Radiology Article type: Review
Authors: Chekhonatskaya M.L., Averianov А.Р., Uts I.A., Velikanova M.G., Bobylev D.A., Chekhonatsky I.A.
Organization: Clinical hospital n.a. S. R. Mirotvortsev SSMU, Russian Medical Academy of Postgraduate Education, Moscow, Saratov State Medical University
Summary:

 An accurate assessment of renal function is critical for adequate dosing of medications. The most informative marker reflecting the functional state of the kidneys is glomerular filtration rate (GFR). Determination of inulin clearance is the most accurate way to assess GFR in children and adults. In this case, the method is invasive, cumbersome, younger children require the installation of a urinary catheter. Techniques for radioisotope estimation of GFR can solve this problem, but all widely used radioisotopes have the ability to bind slightly to plasma proteins, which leads to an underestimation of real values.

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A comprehensive approach to the diagnosis and treatment of straghorn nephrolithiasis

Year: 2018, volume 14 Issue: №1 Pages: 81-86
Heading: Urology Article type: Review
Authors: Chekhonatskaya M.L., Rossolovsky A.N., Kryuchkov I.A., Bobylev D.A.
Organization: Saratov State Medical University
Summary:

A review of the literature is devoted to the most topical diagnostic questions and treatment of patients with urolithia-sis. The role and the latest advances and benefits of minimally invasive surgery were described. Particular attention was paid to the problems of residual calculi and the condition of the renal parenchyma in the perioperative period. The theme of choice of conducting such patients tactics was considered. The actual diagnostic methods and a differentiated approach to the algorithm choice of the examination and treatment of patients with staghorn nephrolithiasis were considered. The review provided a scientometric analysis of research information (documents reference), contained the analytical array of scientific publications. Electronic information resources of scientific electronic library bibliographic databases: eLibrary, PubMed, Clinical Key, Science Direct — were used.

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Correlation between size and density indices of concrements in patients with nephrolithiasis and effective method of treatment by distance shock-wave lithotripsy

Year: 2017, volume 13 Issue: №1 Pages: 77-81
Heading: Urology Article type: Original article
Authors: Chekhonatskaya M.L., Rossolovsky A.N., Bobylev D.A.
Organization: Saratov State Medical University
Summary:

The aim of the article: evaluation of the results of treatment of patients with nephrolithiasis by distance shock-wave lithotripsy on the basis of the data on kidneys received from multispiral computed tomography. Material and Methods. The study involved 46 patients who were hospitalized in the clinic of urology with diagnosed urolithiasis with the pres- ence of a renal calculus from 10 to 17 mm in size. A complex of laboratory analyses including multispiral computed tomography was used. The concrement elimination was carried out by distance shock-wave lithotripsy Results. Correlation analysis and ROC-analysis did not show the efficacy of distance shock-wave lithotripsy comparing scanning procedures and distance shock-wave lithotripsy. Conclusion. The size and average density of a concrement according to multispiral computed tomography should not be served as a basis for prognosis of effective fragmentation of concre-ments by distance shock-wave lithotripsy in patients with urolithiasis caused by stones of 10-17 mm in size.

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Ultrasonic Dopplerometry in diagnosis of cervical injury in birth process

Year: 2017, volume 13 Issue: №1 Pages: 047-050
Heading: Radiology Article type: Original article
Authors: Chekhonatskaya M.L., Bakhmach V.O., Zabozlaev F.G., Chekhonatsky V.A.
Organization: Russian Medical Academy of Post-graduate Education, Saratov State Medical University
Summary:

The goal was to carry out the comparative analysis of ultrasonic Doppler indices and data of morphometric methods of uterine cervix examination of women with prenatal moving of amniotic fluid depending on presence or absence of uterine cervix trauma in labor. Material and methods. 148 pregnant women with prenatal moving of amniotic fluid were examined. The main group included 64 pregnant women with uterine cervix ruptures; the comparison group consisted of 84 patients without any labor trauma. Ultrasonic and morphological examinations of uterine cervix were carried out. Results. Cavernous transformation of venous cervical bloodstream closely correlated (r = 0,67, p <0.001) with the index of vascularization degree and labortrauma degree. Conclusion. The revealed echomorphological relationship in uterine cervix of pregnant women with various labor outcomes allowed using these data to predict uterine cervix rupture in labor process.

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Assessment of hemodynamic parameters of uterus during physiological pregnancy

Year: 2015, volume 11 Issue: №2 Pages: 151-156
Heading: Radiology Article type: Original article
Authors: Chekhonatskaya M.L., Petrosyan N.O.
Organization: Saratov State Medical University
Summary:

The aim of the article is to analysis of the hemodynamic parameters of the uterus and cervix during the second and third trimesters of pregnancy. Material and methods. It was conducted dynamic ultrasound in 240 women with physiological course for singleton pregnancies in the period from 12 weeks of gestation until term labor. Results. For the second trimester of pregnancy redistribution of total uterine blood flow in the direction of increasing blood flow in more of the body than the cervix has been considered to be typical. From the third trimester of pregnancy until term labor a significant increase of blood supply to the cervix has been found; there has been a tendency to increase the capacity of the vascular channel and the reduction in peripheral resistance vessels of cervix. Conclusions. Early detection of disorders of uterine and cervical hemodynamics allows to predict the occurrence of various pathological conditions.

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Ultrasound Diagnostics of Premature Birth

Year: 2014, volume 10 Issue: №1 Pages: 74-79
Heading: Obstetrics and Gynecology Article type: Review
Authors: Chekhonatskaya M.L., Vasilevich L.K., Petrosyan N.O., Kolesnikova E.A.
Organization: Clinical hospital n.a. S. R. Mirotvortsev SSMU, Saratov Clinical Hospital № 8, Saratov State Medical University
Summary:

The purpose of the article is to analyze the data of native and foreign literature and to consider the modern aspects of ultrasound diagnostics of premature birth, and new additional criteria for early diagnostics and prediction of preterm delivery. Hemodynamic characteristics in the second and third trimesters of the pregnancy have been covered.

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Ultrasound diagnostics of postpartum endometritis

Year: 2014, volume 10 Issue: №1 Pages: 65-69
Heading: Obstetrics and Gynecology Article type: Review
Authors: Bratchikova О.А., Chekhonatskaya M.L., Yannaeva N.E.
Organization: Saratov State Medical University
Summary:

The purpose of the article is to present data on diagnostics of postpartum infectious diseases in women in childbirth. The aim of the conducted survey is to study modern ultrasound diagnostic methods of the given pathology.

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Radiology in diagnostics of odontogenic maxillary sinusitis

Year: 2013, volume 9 Issue: №3 Pages: 486-489
Heading: Stomatology Article type: Original article
Authors: Chekhonatskaya М.L, llyasova Е.В., Konnov V.V., Priezzheva V.N., Kochanov S.V., Khmara T.G., Arushanian A.R.
Organization: Saratov State Medical University
Summary:

The purpose: to prove diagnostic capabilities of modern radiation techniques in odontogenic maxillary sinusitis. Material and methods: The study involved 546 patients with sinusitis. The following methods have been used: X-ray of the paranasal sinuses, contrast maxillary sinus radiography, contact intraoral radiographs, orthopantomography, computer tomography and magnetic resonance imaging. Results. In 7,9% of cases the presence of odontogenic sinusitis has been established, in 92,1 % rhinogenous sinusitis has been revealed. The work provides information about the effectiveness of various radiation techniques in the diagnosis of odontogenic sinusitis. Conclusion. For suspected odontogenic sinusitis, treatment of choice includes the combined use of X-ray of the paranasal sinuses in the mentoanterior projection and contact intraoral radiographs of «causal teeth». Computer tomography is the most informative additional method to clarify the diagnosis of odontogenic sinusitis.

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Ultrasound diagnostics of miscarriage in the first trimester of pregnancy

Year: 2013, volume 9 Issue: №4 Pages: 652-656
Heading: Obstetrics and Gynecology Article type: Review
Authors: Chekhonatskaya M.L., Vasilevich L.K., Kolesnikova Е.А., Petrosyan N.O.
Organization: Saratov State Medical University, Saratov Clinical Hospital № 8, Clinical hospital n.a. S. R. Mirotvortsev SSMU
Summary:

On the basis of the analysis of Russian and foreign literature the modern aspects of ultrasonic diagnostics of miscarriage in the first trimester of pregnancy have been examined. The attention is focused on the assessment of the extraembryonic structures and provisional organs. The features of Doppler imaging in the assessment of the course of pregnancy in the first trimester have been highlighted.

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Influence of pregnancy course peculiarities on formation of fetal testicles

Year: 2013, volume 9 Issue: №2 Pages: 234-240
Heading: Obstetrics and Gynecology Article type: Review
Authors: Chekhonatskaya M.L., Vasilevich L.K., Bondarenko N.A.
Organization: Saratov State Medical University
Summary:

The review gives some of morphological, metrical, hormonal and biochemical parameters of antenatal ontogenesis of fetus testicles and newborns depending on pregnancy pathology and childbirth. Comparative analysis was carried out. Risk factors of development of morphological changes in fetus testicles and newborns from mothers with normal and pathological course of pregnancy were presented.

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